From b95e989f070d017be346d1fb6753649b864cb1eb Mon Sep 17 00:00:00 2001
From: Emeric Brun <ebrun@haproxy.com>
Date: Wed, 6 Mar 2019 14:50:21 +0100
Subject: network: support fctl option to force flow control.

Available values are {auto|both|rx|tx|none}.

This option make init init script performs a ethtool -A
with according parameters on the given iface.
---
 sbin/init.d/network | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/sbin/init.d/network b/sbin/init.d/network
index 4e9d2f3..bd72f0f 100755
--- a/sbin/init.d/network
+++ b/sbin/init.d/network
@@ -8,6 +8,7 @@
 #     speed {10|100|1000}
 #     duplex {half|full}
 #     auto {on|off}
+#     fctl {auto|both|rx|tx|none}
 #     slave <if> ...
 #     modprobe [module [module_options]]
 #     lladdr <mac_addr>
@@ -46,6 +47,7 @@ option	media		standard_option
 option	duplex		standard_option
 option	speed		standard_option
 option	auto		standard_option
+option	fctl		standard_option
 option  master_type	standard_option
 option  bonding		option_bonding
 option	slave		multiple_option
@@ -76,6 +78,7 @@ function do_help {
     echo "   - ip6 addr <addressv6>, route <destv6> <-|gwv6> [<args>]"
     echo "   - media auto|{full|fdx|100full|100fdx}|{half|hdx|100half|100hdx}"
     echo "   - duplex {half|full} ; speed {10|100|1000} ; auto {on|off}"
+    echo "   - fctl {auto|both|rx|tx|none}"
     echo "   - slave  <interface*>"
     echo "   - bridge <interface*> ; bridge_stp {on|off}"
     echo "   - sysctl <var>=<val>"
@@ -137,6 +140,26 @@ function set_media2 {
 	/sbin/ethtool -s $1 ${4:+autoneg $4} ${speed:+speed $speed} ${duplex:+duplex $duplex}
 }
 
+function set_fctl {
+    case "$2" in
+	both)
+	    /sbin/ethtool -A $1 autoneg off rx on tx on >/dev/null 2>&1
+	    ;;
+	rx)
+	    /sbin/ethtool -A $1 autoneg off rx on tx off >/dev/null 2>&1
+	    ;;
+	tx)
+	    /sbin/ethtool -A $1 autoneg off rx off tx on >/dev/null 2>&1
+	    ;;
+	none)
+	    /sbin/ethtool -A $1 autoneg off rx off tx off >/dev/null 2>&1
+	    ;;
+	auto)
+	    /sbin/ethtool -A $1 autoneg on rx on tx on >/dev/null 2>&1
+	    ;;
+    esac
+}
+
 function fct_begin_section {
     addr_list=( )
     addr6_list=( )
@@ -541,6 +564,11 @@ function do_start {
 	echo "  ==> Link configuration changed for interface $instname"
     fi
 
+    if [ -n "$opt_fctl" ]; then
+	set_fctl "$instname" "$opt_fctl"
+	echo "  ==> Flow control management set to '$opt_fctl' for interface $instname"
+    fi
+
     if [ ${#opt_slave[*]} -gt 0 ]; then
 	for arg in ${opt_slave[*]}; do
 	    if ( ! $0 status "$arg" && ! $0 start "$arg" ) >/dev/null 2>&1; then
-- 
2.28.0